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Question: Answered & Verified by Expert
A cylinder of height $20 \mathrm{~m}$ is completely filled with water. The velocity of efflux of water (in $\mathrm{m} / \mathrm{s}$ ) through a small hole on the side wall of the cylinder near its bottom is
PhysicsMechanical Properties of FluidsJEE Main
Options:
  • A 10
  • B 20
  • C 25.5
  • D 5
Solution:
2926 Upvotes Verified Answer
The correct answer is: 20
$v=\sqrt{2 g h}=\sqrt{2 \times 10 \times 20}=20 \mathrm{~m} / \mathrm{s}$

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